<template>
	<div>
	<div class="search">
		<input v-model='keyword' class="search-input" type="text" placeholder="输入城市名或拼音" />
	</div>
	<div class="search-content" ref='search' v-show="keyword">
		<ul>
			<li
			 class="search-item border-bottom"
			 v-for="item of list" 
			 :key='item.id'
			 @click='handleCityClick(item.name)'
			>
			{{item.name}}
			</li>
			<li class="search-item border-bottom" v-show="hasNoData">没有找到匹配数据</li>
		</ul>		
	</div>
	</div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapMutations } from 'vuex'
export default {
	name: 'CitySearch',
	props: {
		cities: Object
	},
	data () {
		return {
			keyword: '',
			list: []
		}
	},
	computed: {
		hasNoData () {
			return !this.list.length
		}
	},
	watch: {
			keyword () {
			if (this.timer) {
				clearTimeout(this.timer)
			}
			if (!this.keyword) {
				this.list = []
				return
			}
			this.timer = setTimeout(() => {
				const result = []
				for (let i in this.cities) {
					this.cities[i].forEach((value) =>{
						if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
							result.push(value)
						}
					})
				}
				this.list = result
			}, 100)
		}
	},
	methods: {
		handleCityClick (city) {
			this.changeCity(city)
			this.$router.push('/')
		},
		...mapMutations(['changeCity'])
	},
	mounted () {
		this.scroll = new Bscroll(this.$refs.search)
	}
}
</script>

<style lang='stylus' scoped>
	@import '~styles/varibles.styl'
	.search
		height: .72rem
		background: $bgColor
		padding: 0 .1rem
		.search-input
			box-sizing: border-box
			padding: 0 .1rem
			height: .62rem
			width: 100%
			text-align: center
			border-radius: .06rem
			color: #666
	.search-content	
		position: absolute
		overflow: hidden
		z-index: 1
		top: 1.58rem
		left: 0
		right: 0
		bottom: 0
		background: #eee
		.search-item
			line-height: .62rem
			padding-left: .2rem
			color: #666
			background: #fff
		
		
</style>